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power can minimize the power disruption during a power supply failure and extend
the expected lifetime of each supply by operating normally in a conservative power
mode.
There is no power switch on the RackSwitch; the switch unit powers up when
power is supplied through the DC power source.
The Power Supply LED indicates the status of the power supplies. The LED flashes
when only one DC power source is connected, and is steady when both DC power
sources are connected.
Switch ports
The RackSwitch ports and port options are described in the following sections.
10/100/1000 Base-T ports
Forty-four 10/100/1000Base-T ports (RJ-45) are located on the front panel. In-line
management and Control Plane Stacking are supported by using one or more of
the RJ-45 ports for management.
The G8000 is designed to accept most standard 10/100/1000Base-T (category 5)
cables.
The following table describes the pin assignments for the RJ-45 connector pin
assignments.
SFP ports
8
IBM System Networking RackSwitch G8000: Installation Guide
Table 4. RJ-45 connector pin assignments
Pin number
1
2
3
4
5
6
7
8
Signal
BI DA+
BI DA-
BI DB+
BI DB-
BI DC+
BI DC-
BI DD+
BI DD-
Description
Bi-directional data pair A
positive
Bi-directional data pair A
negative
Bi-directional data pair B
positive
Bi-directional data pair B
negative
Bi-directional data pair C
negative
Bi-directional data pair C
negative
Bi-directional data pair D
negative
Bi-directional data pair D
negative
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